Back in May Ed revealed that he and Camila had written a song called 'The Boy' but it didn't end up on her self-titled debut album.
Now she's teased us by singing a line from the song during a Facebook Live with Billboard's Hot 100 Top 10 Countdown.
She was taking part in the Facebook live to celebrate her first solo single 'Havana' reaching the top of the chart and her album topping the Billboard 200 albums list.
(Cover image via @camila_cabello/Instagram and @teddysphotos/Instagram)
